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Revision 62 as of 2019-09-30 19:27:25
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 * [[https://en.wikipedia.org/wiki/Threat_model|Threat models]]: Some will only want to prevent access to their computer/account when leaving it a few minutes to make coffee - this is simply dealt with (installing a screen locker). Some may want to stop sophisticated gangs from breaking into their systems - this requires a whole shift in thinking so that everything you do has security in mind.
 * [[https://en.wikipedia.org/wiki/Defense_in_depth_(computing)|Defense in depth]]: building [[https://en.wikipedia.org/wiki/Layered_security|layer upon layer]] of security measures - hence not only relying on one layer of security, but many different measures which would all have to be circumvented in order to compromise the system.
 * [[WikiPedia:Threat_model|Threat models]]: Some will only want to prevent access to their computer/account when leaving it a few minutes to make coffee - this is simply dealt with (installing a screen locker). Some may want to stop sophisticated gangs from breaking into their systems - this requires a whole shift in thinking so that everything you do has security in mind.
 * [[WikiPedia:Defense_in_depth_(computing)|Defense in depth]]: building [[WikiPedia:Layered_security|layer upon layer]] of security measures - hence not only relying on one layer of security, but many different measures which would all have to be circumvented in order to compromise the system.
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 * Enforce privilege separation using [[UsersAndGroups|Linux users/groups]], [[Sandboxing]] or [[Virtualization]] methods.
 * Minimize running software - check for running processes that you do not need ({{{ps}}}, {{{top}}}, monitoring systems...), minimize running [[systemd|services]].
 * Enforce privilege separation using [[UsersAndGroups|Linux users/groups]], [[ServiceSandboxing]] or [[Virtualization]] methods.
 * Minimize running software - check for running processes that you do not need ({{{ps}}}, {{{top}}}, monitoring systems, ...), minimize running [[systemd|services]].
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 * Prevent data loss with a good [[Backup]] strategy.
 * Increase availability by adding redundancy/failover mechanisms ([[Storage#RAID|RAID]]...).

 * Prevent data loss with a good [[BackupAndRecovery|backup]] strategy.
 * Increase availability by adding redundancy/failover mechanisms ([[Storage#RAID|RAID]], ...).

Translation(s): English - Français - Italiano



https://www.debian.org/logos/openlogo-nd-50.png https://www.debian.org/Pics/debian.png

Portal/IDB/logo_portal.png Welcome to Debian security management


Portal/IDB/icon-security-32x32.png This portal talk about managing security on your system. Technical language could be used.

https://www.debian.org/doc/manuals/securing-debian-howto/ - Securing Debian Manual
https://www.debian.org/security/ - Information about Debian Security

  • Computer security, cybersecurity or information technology security (IT security) is the protection of computer systems from the theft of or damage to their hardware, software, or electronic data, as well as from the disruption or misdirection of the services they provide. The field is becoming more important due to increased reliance on computer systems, the Internet, wireless networks, the growth of "smart"/"Internet of things" devices.

Some common principles of computer security include:

  • Threat models: Some will only want to prevent access to their computer/account when leaving it a few minutes to make coffee - this is simply dealt with (installing a screen locker). Some may want to stop sophisticated gangs from breaking into their systems - this requires a whole shift in thinking so that everything you do has security in mind.

  • Defense in depth: building layer upon layer of security measures - hence not only relying on one layer of security, but many different measures which would all have to be circumvented in order to compromise the system.

  • A weakest link is any component in a system, that will cause the whole security strategy to fail if defeated.

  • Security is a process, not a product: just buying or setting up a technology solution will not provide you security on its own - security is an ongoing technological and human process.


The Securing Debian manual describes security in Debian, securing and hardening the default Debian GNU/Linux installation, common tasks to set up a secure network environment, and additional information on available security tools.


Security checklist

This covers only some aspects of securing a system:

Wiki pages

List of pages related to security management in Debian:


CategoryPortal | CategorySystemAdministration | CategorySystemSecurity | CategoryNetwork